Backscatter communication method, exciting device, reflecting device and receiving device
A technology of reflection equipment and excitation equipment, which is applied in the field of communication, can solve the problems of short applicable distance of backscatter communication, anti-interference processing of reflection equipment data, and weak anti-interference ability of reflection equipment data, so as to improve anti-interference ability and network performance , Improve anti-interference ability, reduce the effect of continuous interference
Active Publication Date: 2022-04-22
CHENGDU HUAWEI TECH
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Problems solved by technology
[0003] Due to the short applicable distance of the existing backscatter communication, anti-interference processing is not performed on the reflection device data, and the anti-interference ability of the reflection device data is weak
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[0056] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.
[0057] see figure 1 , figure 1 It is a system architecture diagram of the backscatter communication system provided by the embodiment of this application. Such as figure 1 As shown, the backscatter communication system of the present application may include an excitation device 10 , a reflection device (backscatter device) 20 and a receiving device 30 . The incentive device 10 can determine a sequence (i.e. the first sequence, the first sequence can be a random sequence or a pseudo-random sequence) according to the parameters of the sequence (such as sequence type, initial value and / or sequence shift value, etc.), and can The sequence is modulated onto a carrier signal to generate a first signal. The excitation device 10 sends this first signal. Reflective device 20 may...
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The embodiment of the present application discloses a backscatter communication method and a related device. The method includes: stimulating the device to determine the first sequence, generating a first signal, and sending the first signal, wherein the first signal carries the first sequence. Sequence; after the reflective device receives the first signal, it modulates the reflective device data onto the received first signal to obtain a second signal, and reflects the second signal, thereby realizing the first scrambling of the reflective device data by the first sequence The receiving device determines the above-mentioned first sequence, receives a second signal from the reflecting device, and demodulates the received second signal according to the first sequence, so as to obtain the reflecting device data carried on the second signal. By adopting the embodiment of the present application, the anti-interference ability of the reflection device data can be improved, the continuous interference in the backscatter communication process can be reduced, and the anti-interference ability and network performance of the backscatter communication network can be improved.
Description
technical field [0001] The present application relates to the technical field of communication, and in particular to a backscatter communication method, an excitation device, a reflection device and a receiving device. Background technique [0002] Backscatter communication is an extremely low-power, low-cost passive communication technology that does not require a dedicated radio frequency excitation source and is suitable for IoT applications. A typical backscatter communication usually includes three nodes, namely the excitation device, the reflection device and the receiver device. The excitation device sends a wireless signal (such as a single-tone signal, single-carrier signal or multi-tone signal), and the reflection device receives the wireless signal sent by the excitation device and carries its own reflection device data on the wireless signal to obtain a reflection signal, and reflects the reflection signal To the receiving device; the receiving device demodulate...
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IPC IPC(8): H04B1/40H04K3/00H04B5/48
CPCH04B1/40H04K3/80H04K1/02H04K3/25H04K2203/20H04K2203/18G06K7/10267G06K19/07336H04W4/70H04B5/77
Inventor 颜矛黄煌邵华陈磊
Owner CHENGDU HUAWEI TECH